/*
 * Copyright (c) "Neo4j"
 * Neo4j Sweden AB [https://neo4j.com]
 *
 * This file is part of Neo4j.
 *
 * Neo4j is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
package org.neo4j.bolt.messaging;

import static org.assertj.core.api.Assertions.assertThat;
import static org.neo4j.memory.EmptyMemoryTracker.INSTANCE;

import java.nio.ByteBuffer;
import java.nio.ByteOrder;
import org.junit.jupiter.api.Test;
import org.neo4j.io.memory.ByteBuffers;

public class RecordingByteChannelTest {

    @Test
    void shouldBeAbleToWriteToThenReadFromChannel() {
        // Given
        RecordingByteChannel channel = new RecordingByteChannel();

        // When
        byte[] data = new byte[] {1, 2, 3, 4, 5};
        channel.write(ByteBuffer.wrap(data));
        ByteBuffer buffer = ByteBuffers.allocate(10, ByteOrder.LITTLE_ENDIAN, INSTANCE);
        int bytesRead = channel.read(buffer);

        // Then
        assertThat(bytesRead).isEqualTo(5);
        assertThat(buffer.array()).isEqualTo(new byte[] {1, 2, 3, 4, 5, 0, 0, 0, 0, 0});
    }
}
